I posted this before, but it seems to have disappeared - from both newsgroups I put it in. Very suspicious.
This chart is from a 1982 information book (oddly, there was no mention of computers in the index even though just about every other subject, from First Aid to house-buying to cooking to hiking, was covered).
If a whole fryer costs 49 cents per pound:
67 cents p.p. should be the cost of breast half without rib 65 cents for breast half with rib 55 cents for thighs 53 cents for thighs & drumsticks 50 cents for drumsticks 39 cents for wings
If the fryer's at 51 cents, then it's 70, 67, 57, 55, 53, 41
If 53 cents, then it's 72, 70, 59, 57, 55, 43
If 55 cents, then it's 75, 73, 61, 59, 57, 44
If 57 cents, then it's 78, 75, 63, 61, 59, 46
If 59 cents, then it's 80, 78, 66, 63, 61, 48
If 61 cents, then it's 83, 81, 68, 66, 63, 49
If 63 cents, then it's 86, 83, 70, 68, 65, 51.
Note that the ratios change as you move down the chart.
Lenona.